Data was dumped on ~June 6th, 2011.
I don't have information regarding when or how specific users acted on suggested edits, so I will give some stats on when and how quickly suggested edits were processed (i.e., either accepted or rejected).
None of this data is available on SEDE yet, though it should be at some point.
Stack Overflow
Average time for an edit to be processed: 16.6 minutes
Average of top 95% fastest processed times: 11.9 minutes
Average of bottom 5% slowest processed times: 106.3 minutes
DayOfWeek EditsProcessed AvgProcessedTimeInMins
--------- -------------- ----------------------
Sun 4616 23.5
Mon 8634 15.9
Tues 9415 15.5
Wed 9658 14.8
Thurs 9994 14.9
Fri 8924 14.8
Sat 4804 24.5
You didn't ask for this, but it was easy to calculate:
Post Type Count
---------- -----
Question 38634
Answer 11315
Wiki 96
TagWiki 3393
TagWikiExcerpt 2607
While gathering this data, I found that the processing time varies considerably across sites, so instead of just putting up one random other site, here are the first three stats for all the data sets I have access to. The times are in minutes.
Site Count Average Avg95Pct Avg5Pct
---- ----- ------- -------- -------
Android 323 209.3 150.5 1314.5
Apple 490 154.7 104.0 1119.0
Cooking 197 187.5 114.3 1608.1
CsTheory 111 71.9 53.0 439.6
DIY 47 1415.9 1084.3 8093.8
Electronics 282 168.6 102.6 1375.6
English 658 40.0 28.7 257.4
GameDev 474 72.4 52.8 448.7
Gaming 741 29.0 20.8 183.8
GIS 210 197.8 135.7 1362.8
Math 1381 14.6 8.3 131.8
Photography 225 75.5 56.5 429.6
Programmers 1180 26.8 17.9 195.7
ServerFault 1807 61.0 43.7 389.0
StackOverflow 56045 16.6 11.9 106.3
Stats 173 63.9 48.8 365.9
SuperUser 2606 17.5 11.5 131.6
TeX 779 16.5 6.9 200.0
Ubuntu 1610 51.8 33.0 411.0
Unix 428 74.2 51.2 506.8
WebApps 362 75.5 52.5 502.6
Webmasters 373 270.4 190.7 1803.1
WordPress 282 75.7 56.8 431.6
Given that the bottom 5% of processed times are massively higher than the averages, I suspect these are the edits that no one really knows what to do with, so they leave them for the next person to make a decision.
The stats for Home Improvement (DIY) are a bit concerning.